133953415990 has 16 divisors (see below), whose sum is σ = 249430499280. Its totient is φ = 51733732960.

The previous prime is 133953415733. The next prime is 133953415997. The reversal of 133953415990 is 99514359331.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133953415997) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 230953876 + ... + 230954455.

It is an arithmetic number, because the mean of its divisors is an integer number (15589406205).

Almost surely, 2^133953415990 is an apocalyptic number.

133953415990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

133953415990 is a deficient number, since it is larger than the sum of its proper divisors (115477083290).

133953415990 is a wasteful number, since it uses less digits than its factorization.

133953415990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 461908367.

The product of its (nonzero) digits is 1968300, while the sum is 52.

The spelling of 133953415990 in words is "one hundred thirty-three billion, nine hundred fifty-three million, four hundred fifteen thousand, nine hundred ninety".